When I was a young kid I always heard older men talk b.s. about the two-step snake (A snake that would bite a man and kill him before he could take three steps). They didn't know anything about reptiles and amphibians but a lot of people believed that there was one. They could never say where it was but it was always in Africa or Asia. Where did this story come from and how accurate is it? I know about the hundred-pace snake Deinagkistrodon acutus, but that isn't it. I have heard the black mamba referred as the two-step before but am not sure if that is it. However although the mamba will kill quick it doesn't kill that quickly.

The "two-step" is from Southeast Asia, and the term was primarily brought back by US soldiers that went to Vietnam. Other names are "The White Lipped Viper", "Bamboo Viper" "Green Pitviper". But the scientific name is Trimeresurus albolabris.